Bobbin-clutching device for spindles.



No. 851,884. PATENTBD APR. 30, 1907- G A. HAWBS. BOBBIN GLUTGHING DEVICE FOR SPINDLES.

APPLICATION FILED JULY 7, 1905.

BEES-SHEET 1.

INVENTEIRl ATTY.

PATENTED APR. 30, 1907 -v G. A. HAWES.

BOBBIN GLUTOHING DEVICE FOR SPINDLES.

AYPLIOATIOH FILED JULY 7, 1905.

2 SHEETS-SHEET 2.

Q T Y.

UNITED STATES PATENT OFFICE.

COLIN A. HAWVES, OF PAlVTUCKET, RHODE ISLAND, ASSIGNOR TO EASTON AND BURNHAM MACHINE COMPANY.

BOBBlN-CLUTCHING DEVICE FOR SPINDLES.

Specification of Letters Patent.

Patented April 30, 1907.

Application filed July 7,1905. crial lie 268,720.

T0 on whom it may concern.-

Be it known that I, COLIN A. Hnwns, a citizen of the United States, residing at Pawtucket, in the State of Rhode Island, have invented a new and useful Improvement in Bobbin-Clutching Devices for Spindles, of which the following is a specification.

This invention has for its object the production of novel and efficient means for holding the bobbin in operative position upon the spindle during its revolution, and it relates to that class of bobbin clutching devices, which are adapted to engage with the bobbin externally of its head, through the medium of centrifugal force.

In centrifugally operated bobbin clutching devices heretofore constructed for action ex.- teriorly of the head of the bobbin, the clutching levers have been rendered operative by reason of the preponderance in weight of the outwardly moving arms of the said clutching levers, over that of the inwardly moving arms which engage with the head of the bobbin, and hence such clutching levers have been designated as centrifugally acting. I have, however, obtained important advantages by so constructing the clutching levers that their inwardly moving engaging arms are of greater weight than that of the outwardly moving arms, so that the centrifugal force exerted upon the inwardly moving engaging arms will be greater than that ex erted upon those arms by means of which the said engaging arms are actuated to engageinent.

In the accompanying drawings :Figure 1 represents a side elevation of one form of my improved bobbin clutching device, showing also a portion of the spindle, and of the bobbin. Fig. 2 represents an axial section of the bobbin clutching device and of the bobbin shown in Fig. 1. Fig. 3 represents a top view with the bobbin removed. Fig. 4- represents a top view of the collar which provides a fulcrum for the centrifugal bobbin clutching levers. Fig. 5 represents an outer side view of one of the bobbin clutching levers. Fig. 6 represents an inner side view of the same. Fig. 7 represents a top view of the same. Fig. 8 represents an axial section as in Fig. 2, showing the insertion of a washer under the head of the bobbin. Fig. 9 represents the'top view of a collar provided with projections which serve as a support for the bobbin, instead. of allowing the bobbin to rest upon the offset portion of the bobbin supporting levers. Fig. 10 represents a section as in Fig. 2, showing a modified construction of the collar with the bobbin resting thereon. Fig. 11 represents the same with the inserted washer. Fig. 12 represents a broken side elevation showing a modification. Fig. 13 represents an axial section of the device shown in Fig. 12. Fig. 14 represents a top view of the fulcrum 001- lar shown in Fig. 12. Fig. 15 represents a side view of one of the bobbin clutching levers shown in Fig. 12. Fig. 16 represents a top view of the same. Fig. 17 represents a broken side elevation in which the centrifugal 7o bobbin clutching lovers are inclosed in a protecting shield.

in the drawings, A represents the spindle, B the whirl attached to the spindle, and C the bobbin. The whirl B is provided with the upwardly extending tapering sleeve D, upon which is placed the tightly fitting but readily removable annular collar E, the said coll-a1 being provided with the notches a a (L, which are adapted to receive the axially arranged bobbin clutching levers F F F, the said levers resting at their lower ends upon the uppersurface b of the whirl, and having the under side of their outwardly o ['l'set upper portion 0, raised above the up er surface of the 8 5 collar E, whereby the said evers will be su ported by their lower ends resting upon tfi upper surface of the whirl B, and not by their engagement with the upper surface of the said collar E. The horizontally offset por- 0 tion a, is provided with the upwardly extending flange d, which is preferably made in curved form, to engage with the periphery of the head a of the bobbin C, which rests upon the upper horizontal surface of 5 the offset portion 0 of the bobbin holding levers and is therefore supported in vertical position independently of the said collar. The weight of the armf of the bobbin clutching lever F, which is below its fulcrum point l of the collar E, is preferably made much less than that of the shorter engaging arm 9, which is above the said collar, which is contrary to the construction heretofore employed in bobbin clutching levers, said levers having been made dependent for their e'lli ciency upon the greater mass of metal em ployed in their lower actuating arms. In my invention I employ centrifugal leverage and not direct centrifugal action, to clutch the head of the bobbin. I am therefore enabled to make the clutching levers much lighter and have been able to carry the lower arms of the said clutching levers much closer to the axis of the spindle than heretofore.

In Fig. 8, a loose washer h 's placed between the offset portion 0 of the clutching levers F and the head of the bobbin, in order to protect the head of the bobbin from wear, and to form a stop for the inward movement of the engaging arms g of the said clutching levers.

In Figs. 9 and 10, the collar E is shown as provided with the upwardly extending lugs k k, which serve to raise the washer h to such a height as to free the bobbin clutching levers F from the weight of the bobbin, the weight of the bobbin in this case being supported entirely by the collar E. The clutching levers F are provided with the lateral extensions j, which serve to prevent the said levers from rising in the holding notches a, of the collar.

A modification is shown in Figs. 12 and 13,

in which a fulcrum collar E, is employed provided with the upturned flange m, and with the perforations i, "i, 01, adapted to receive the engaging arms 9 of the bobbin clutching levers F, the said levers being constructed of sheet metal as shown in Figs. 15 and 16. And above the collar E upon the sleeve D of the whirl, is laced the washer h which serves to support t 1e bobbin and also to limit the inward movement of the engaging arms 9 of the levers whenever the bobbin is lifted from the rapidly revolving spindle, and as before described the clutching action is dependent upon the leverage of the lighter lower arms f and not upon the direct centrifugal action of a preponderant weight.

In connection with the bobbin clutching levers F, shown in Figs. 12 and 13, l have preferred to employ a continuous shield G, for protecting the lower arms of the said. levers, as shown in Fig. 17.

I claim as my invention 1. The combination of a spinning spindle, and a bobbin held upon the spindle, with bobbin clutching levers having lower arms longer than their upper arms, and a fulcrum relatively nearer their upper ends, said upper arms serving to support the bobbin by engaging with the exterior of its head, the weight of the upper engaging arms being greater than that of the said lower arms, and the center of gravity of the lower arms being farther from the fulcrum than that of the upper arms.

2. The combination of a spinning spindle, with centrifugal clutching levers having the bobbin-clutching arms of the said levers heavier than those by means of which the said clutching arms are actuated to clutch the exterior of the head of the bobbin.

3/ The combination of a spinning spindle, the whirl and sleeve secured thereto, a collar mounted on the sleeve, and centrifugal clutching levers fulcrumed on the said collar and adapted to exteriorly engage and rotate a bobbin, and having the bobbin clutching arms of greater weight than that of the arms by means of which they are actuated.

4. The combination of a s inning spindle, with a plurality of centrifuga bobbin-clutching levers mounted to rotate therewith, and symmetrically arranged with reference to their axis of rotation, said levers having their bobbin-clutching arms made heavier than the arms by which they are actuated to engage exteriorly with the head of the bobbin.

5. The combination of a s inning spindle, a sleeve secured thereto, an the whirl, with a plurality of centrifugal bobbin clutching levers symmetrically arranged with relation to the axis of the spindle, and having their upper arms made heavier and shorter than their downwardly extending lower arms, and mounted to rest on the whirl, the heavier upper arms being moved inwardly to externally engage the head of the bobbin by reason of the greater distance of the center of gravity of the lower arms from the fulcrum than that of the upper arms.

6. The combination of a spinning spindle, and a fulcrum with centrifugal bobbin clutching levers having their upper arms made heavier andshorter than their downwardly extending lower arms, whereby their heavier upper arms will be moved toward the axis of the spindle, when under rotation by the advantageous centrifugal action of the downwardly extending lighter arms.

7. A s inning spindle having an attached whirl an sleeve, a series of bobbin clutching levers mounted to rotate with said whirl and sleeve, and to exteriorly engage the head of a bobbin, and having the weight of their upper engaging arms made greater than the weight of their downwardly extending longer lower arms, and having the outward movement of their up er arms limited by the engagement of their lower arms with the side of the said sleeve.

8. A spinning spindle, a collar rotating therewith, a plurality of centrifugal bobbinclutching levers fulcrumed thereon, and having their upper arms laterally curved to externally engage and hold the head of a bobbin each of the said levers being made heavier above its fulcrum than below the same.

9. A spinning spindle, a collar rotatable therewith, a plurality of centrifugal bobbinclutching levers fulcrumed thereon, and having the engaging arms above their fulcrums heavier than the arms below the same, and a protecting shield surrounding the said levers.

ITS

10. The combination of a spinning spindle, the whirl and sleeve with the collar, and the centrifugal. bobbin-clutching levers fulcrumed on the said collar, and supported at their lower ends by the whirl and adapted at their upper ends to externally engage the head of a bobbin.

1]. The combination of a spinning spindle, the whirl and the sleeve, with the collar pro vided with the notches, and adapted to embrace the sleeve, and the centrifugal bobbinclutching levers held in the said notches of the collar the engaging upper ends of the said clutching levers being heavier than their lower ends.

12. The combination of a spinning spindle, the whirl, the sleeve and the collar with the bobbin clutching levers fulcrumed at the outer side of the openings of the collar and provided with means for preventing upward movement therein the engaging upper ends of the said clutching levers being heavier than their lower ends.

13. The combination of a spinning spindle, the whirl, the sleeve, and the collar, with the centrifugal bobbin clutching levers, fulcrumed at the outer side of the openings of the collar, and provided with lateral extensions for preventing the upward movement of the levers the engaging upper ends of the said clutching levers being heavier than their lower ends.

14. The combination of a spinning spindle, the whirl, and the sleeve, with the collar held upon the sleeve, the horizontally ol'l'set centrifugal bobbin clutching levers, and the washer for supporting the bobbin.

15. The combination of a spinning spindle, the whirl, and the sleeve, with the collar held upon the sleeve, the horizontally offset centrifugal bobbin clutching levers, and the bobbin supporting washer, resting upon the offset portion of the said levers.

16. The combination of a spinning spindle, the whirl, the sleeve, the perforated fulcrum collar held upon the sleeve, the centrifugal bobbin-clutching levers fulcrumed in the perforations of the fulcrum collar for engagement with the exterior of the head of the bobbin, and having their engaging upper ends limiting the inward movement of the engaging ends of the said levers upon the removal of the bobbin from the revolving spindle.

17. The combination of a spinning spindle, the whirl, the sleeve, the perforated fulcrum collar held upon the sleeve, the centrifugal bobbin clutching levers fulcrumed in the perforations of the fulcrum collar for engage ment with the exterior of thehead of the bobbin, and having their engaging upper ends heavier than their lower ends, and the washer arranged above the fulcrum collarforliiniting the inward movement of the engaging ends of the said levers upon the removal of the bobbin from the revolving spindle.

COLIN A. HAXVES.

\Vitnesses:

SOCRATES SOIIOLFIELD, FRED H. EASTON.

heavier than their lower ends, and means for 

